I may be naive or inattentive, but most any color film I always used was Kodacolor X, Kodacolor II and whatever came after that, Ektacolor, Vericolor, and whatever came after that. I suppose I've always just used whatever Kodak color film I could get my hands on, or what was available. But I never questioned any of it, I just used it. It is what it is--good enough for me.